Saw-swaging device



(No Model.) 2 Sheets-Sheet 1.

A. L. NAVONE.

SAW SWAGING DEVICE.

Patented July 12, 1892.

mulls PiYEflS cm, Fnoro-umm, WASHINGTUN, n. c.'

(No Model.) 2 Sheets-Sheet- 2.

A. L. NAVONE. SAW SWAGING DEVICE.

No. 478,886.- Patented July 12, 1892'.

UNITED STATES PATENT OFFICE.

ANTONIO L. NAVONE, OF CALISTOGA, CALIFORNIA.

SAW-SWAGING DEVICE.

SPECIFICATION forming part of Letters Patent No. 478,886, dated July 12,1892.

' Application filed November 11, 1891- Serial No. 411,627. (No model.)

struction of the cam and anvil-bar, the means for clamping the tooth andholding the saw, the means for feeding the saw and other details ofconstruction and arrangement, all of which I shall hereinafter fullydescribe, and specifically set forth in the claims.

The object of my invention is to provide a simple, powerful, andreadily-ad j ustable sawswaging machine, in the operation of which theteeth will be sharpened as Well as swaged.

Referring to the accompanying drawings for a more complete explanationof my invention, Figure 1 is a front view of my machine, theclamping-lever G being in dotted lines and the saw being broken away toshow the adjusting-screw. Fig. 2 is a back view ofmy machine. Fig. 3 isa top view. Fig. 4 is a side view. Fig. 5 is a perspective view of theswage-cam. Fig. 6 is a, perspective view of" the sliding bearing inwhich the anvil is carried. v

A is the stock of the machine, having a foot a for securing it to aconvenient bench. To this stock is fitted the frame B, in the head ofwhich are carried the sWage-cam G and the anvil D. The cam O is formedwith astraight face terminating belowin a rounded contactpoint c. Itsbody passes through the frame B in a suitable seat and receives thelever E on its other end, whereby said cam can be rocked. The anvil D isformed with a straight face terminating above in a contact edge orcorner (1, and said anvil is pivoted in and carried by a sliding bearingF, seated suitably in frame B. The bearing F is adjusted inwardly by ascrew f and is forced outwardly by a spring f.

The operation of these parts is as follows: The tooth of the saw isinserted between the swage-cam and the anvil, and the swaging is done bythe rounded contact-point of the cam operating on the face of the toothand forcing said tooth against the contact edge of the anvil, whichbears with its straight face against the back of the tooth. These twocontacts require to be in a certain relation to each other in order toproperly operate. The anvil is pivotally mounted, so that it can adjustits face to different inclinations of the toothbacks, and because ofthis adj ustability it is evident that its contact edge will vary itsposition with relation to the contact-point of the cam. Therefore it isnecessary to compensate for this variance, and this is done by mountingthe anvil in the sliding bearing F, whereby its contact edge can bebrought into the required relation to the cam, no matter what itsinclination may be in adjusting itself to the particular tooth. This isdone by setting up or relieving the screwf, in the former case forcingthe anvil farther in and in the latter allowing it to be forcedbackwardly by the spring f. The saw-tooth being between the cam andanvil and their contacts being properlyand relatively adjusted, thelever E is moved to rock the cam upwardly. The rounded contact-point ofthe cam bearing on the face of the tooth effectually swages it, and thecontact is so sharp and clean that the swaged point will be left sharpand will not require any subsequent filing or grinding whatever. It isnecessary during this operation of swaging to clamp the tooth tightly inplace. To do this, I have the eccentric-headed clampinglever G. This ispivoted at gin a bracket g,

secured to the top of frame B. Opposed to the head of this lever is anabutment-stud H, seated in frame 13 and having a roughened face. Thebody of the saw-tooth is clamped firmly between the eccentric head oflever G and the abutment-stud H and will not move under theswaging-pressure; A straight saw is seated with its back in aresteplatel, while a circular saw is fitted with its central eye over astud or pin.

To provide for different widths of saws being received in the machine,the frame B is made to slide in stock A. This adjustment is effected bymeans of a screw J, the upper end of which is stopped in abearing b onthe back 'of frame B. The screw passes and operates through a fixed nutK, secured to stock A, and is operated by means of a pinion j on itslower end, engaged by a gear 1 on a shaft L, having a crank-handle Z.Thus the whole frame B may be moved up or down, and as it carries theoperating parts sufficient space is thus provided between them and thesaw-support to receive saws of different widths or diameters. Thesaw-for example, a circular saw-may be seated on a stud or pin directlyin nut K, or it may be seated on a pin or stud in a fixed plate M,having a series of holes m to receive it at different points, and thusextend the limits of adjustment. The sawrest I may be set in any of saidholes to receive the backs of straight saws. To steady the latter, Ihave a long bracket N secured to the same pin or stud and having rollersn in the extremities of its arms, which bear under the saw-back.

O is a pawl-bar to feed the saw forward to present a fresh tooth to beoperated upon. The lower extremity of this bar has a bent end or stud 0,which engages the saw-tooth. It is secured to the lever E by a clip P,which is seated adjustably on said lever and is set in position byascrewp. This clip is pivoted to a sleeve 13, fitted adj ustably on thepawlbar and set by a screw 19 Thus the proper inclination and extensionof the bar may be had and its proper stroke regulated by the severaladjustments of the clips on its conneetions. \Vith each operativemovement of lever E the pawl-bar stud 0 slips a tooth and with eachreturn movement it engages a tooth and feeds the saw forward. To releasethe tooth from between the swage-eam and anvil, so that the saw can bemoved, there is a spring-controlled pusher or plunger Q seated in frameB just below the abutment-stud. This plunger yields as the saw-tooth isclamped and forced between the cam and anvil; but as soon as the toothis released it springs forwardly and throws the saw far enough out tofree its tooth, and the saw can then be moved.

To the head of frame B a handle R may be removably secured to providemeans for easily lifting the machine to operate on saws in place.

The straight face of the swage-cam provides ample room for the entranceof the tooth between it and the anvil.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a saw-swage, the combination of the rocking swage-cam, theswinging opposing anvil adapted byits movement to conform to theinclinations of the backs of different teeth, and the sliding bearingcarrying said anvil, whereby it can be adjusted properly with re lationto the cam independently of its individual adjustment, substantially asherein described.

2. In a saw-swage, the combination of the rocking swage-cam having thestraight face terminating below in the rounded contactpoint, theswinging opposing anvil having the straight face terminating above inthe c011- tact edge, and the sliding bearing carrying the anvil andadapted to adjust the latter to the cam without regard to itsinclination on the saw-tooth back, substantially as herein described.

3. In a saw-swage, the combination of a frame, the rocking sWage-camcarried by the frame and having a straight face terminating below in therounded contact-point, the opposing anvil carried by the frame andhaving a straight face terminating above in the contact edge, and theeccentric-headed lever pivoted to the frame and adapted to clamp the sawbetween it and said frame, substantially as herein described.

4. In a saw-swage, the combination of a frame, the rocking swage-camcarried by the frame and having a straight face terminating below in therounded contact-point, the opposing anvil carried by the frame andhaving a straight face terminating above in the contact edge, and theeccentric-headed clampinglever and the opposing abutment-stud bothcarried by the frame and between which the saw is clamped, substantiallyas herein described.

5. In a saw-swage, the combination of a frame, the rocking swage-camcarried by the frame and having a straight face terminating below in therounded contact-point, the opposing anvil carried by the frame andhaving a straight face terminating above in the contact edge, theeccentric-headed clamping-lever and the opposing abutment-stud bothcarried by the frame and between which the saw is clamped, and thespring-actuated puslrplunger carried by the frame for throwing the sawout from between the cam and anvil when relieved by the clamping-lever,substantially as herein described.

6. In a saw-swage, the combination of the stock A, having the fixedplate M, with series of holes, the saw-support adapted to be secured inany of said holes, the frame 13, mounted in the stock, the cam, theanvil, and clamping-lever carried by the frame, and the means forvertically moving said frame, consisting of the fixed nut, the screwseated in the nut and connected with the frame, and the connections foroperating the screw, substantially as herein described.

7. In a saw-swage and in combination with the operating-lever thereof,the pawl-bar engaging the saw-teeth and the connection between said barand lever, consisting of the clip I, sliding 011 the lever and set by ascrew, and the sleeve 17, pivoted to the clip and sliding on thepawl-bar with a screw to set it, substantially as herein described.

In witness whereof I have hereunto set my hand.

A. L. NAVONE.

Witnesses:

T. W. MURPHY, WM. H. REED.

